[Gambit] ACFS — Worktree Isolation Improvement

[AccidentalJedi]

[CORE_MODULE] ACFS Worktree Isolation

Scope: Agent-Confined File System — sandbox isolation

Target Files

• agents/core/acfs.py

Instructions

1. Improve ACFS sandbox isolation, worktree management, security boundaries
2. Make ONLY additive changes. Run all 2046+ tests. Fourteen-Hat Review required.

[copilot-swe-agent]

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